import java.util.*;

public class Test {
    public static void main1(String[] args) {
        LinkedHashMap<Integer,Character> map = new LinkedHashMap<>(5,0.7f,true);
        map.put(3,'c');
        map.put(2,'d');
        map.put(5,'s');
        System.out.println(map);

        map.get(2);
        System.out.println(map);
        map.get(3);
        System.out.println(map);
        HashMap<Integer,Integer> map2 = new HashMap<>();
        map.size();
        map2.size();
        map2.isEmpty();
        Collection<Integer> c = new ArrayList<>();
    }

    public static void main(String[] args) {
        LRUCache lruCache = new LRUCache(3);
        lruCache.put(3,0);
        lruCache.put(40,1);
        lruCache.put(50,2);
        lruCache.put(60,5);
        lruCache.put(50,-5);
        System.out.println("hello");
    }
}
